Chapter 4101:8-22 Special Piping and Storage Systems

[Comment: When a reference is made within this rule to
a federal statutory provision, an industry consensus standard, or any other
technical publication, the specific date and title of the publication as well
as the name and address of the promulgating agency are listed in rule
4101:8-44-01 of the
Administrative Code. The application of the referenced standards shall be
limited and as prescribed in section
102.5 of rule
4101:8-1-01 of the
Administrative Code.]

2200.1Scope.This chapter shall govern the design, installation,
construction and repair of fuel oil and diesel oil storage and piping systems
supplying and piped to building service equipment. The storage of fuel oil and
flammable and combustible liquids not associated with building services
equipment shall be in accordance with Chapters 6 and 34 of the fire code and
enforced by the fire official.

2201.1Materials. Supply tanks
shall be listed and labeled and shall conform to UL 58 for underground tanks
and UL 80 for indoor tanks.

2201.2Above-ground tanks. The maximum amount of fuel oil or diesel oil stored above ground or inside
of a building shall be 660 gallons (2498 L). The supply tank shall be supported
on rigid noncombustible supports to prevent settling or shifting.

Exceptions:

1.
The storage of fuel oil, used for space or
water heating, above ground or inside buildings in quantities exceeding 660
gallons shall comply with NFPA 31.

2201.2.1
Tanks within buildings. Supply tanks for use inside of buildings shall
be of such size and shape to permit installation and removal from dwellings as
whole units. Supply tanks larger than 10 gallons (38 L) shall be placed not
less than 5 feet (1524 mm) from any fire or flame either within or external to
any fuel-burning appliance.

2201.2.2Outside above-ground tanks.
Tanks installed outside above ground shall be a minimum of 5 feet (1524
mm) from an adjoining property line. Such tanks shall be suitably protected
from the weather and from physical damage.

2201.3Underground tanks.
Excavations for underground tanks shall not undermine the foundations of
existing structures. The clearance from the tank to the nearest wall of a
basement, pit or property line shall not be less than 1 foot (305 mm). Tanks
shall be set on and surrounded with noncorrosive inert materials such as clean
earth, sand or gravel well tamped in place. Tanks shall be covered with not
less than 1 foot (305 mm) of earth. Corrosion protection shall be provided in
accordance with Section
2203.7.

2201.3.1Regulated underground storage of fuel
oil.The design,
installation, registration, and inspection of regulated underground storage
tanks shall be in accordance with the fire code and rules adopted by the state
fire marshal and enforced by the fire official, in accordance with sections
3737.87 to
3737.89 of the Revised Code.
Underground storage tanks not regulated by the state fire marshal's Bureau of
Underground Storage tanks shall comply with the applicable requirements of
Chapter 23 of NFPA 30.

2201.4Multiple tanks. Cross
connection of two supply tanks shall be permitted in accordance with Section
2203.6.

2201.5Oil gauges. Inside tanks
shall be provided with a device to indicate when the oil in the tank has
reached a predetermined safe level. Glass gauges or a gauge subject to breakage
that could result in the escape of oil from the tank shall not be
used.

2201.6 Flood-resistant
installation. In areas prone to flooding as established by Table
301.2(1), tanks
shall be installed at or above the elevation required in Section 322.2.1 or
322.3.2 or shall be anchored to prevent flotation, collapse and lateral
movement under conditions of the design flood.

2201.7Tanks abandoned or removed.
Exterior above-grade fill piping shall be removed when tanks are
abandoned or removed. Tank abandonment and removal shall be in accordance with
the fire code.

2202.1Materials. Piping shall consist of steel pipe, copper tubing or
steel tubing conforming to ASTM A 539. Aluminum tubing shall not be used
between the fuel-oil tank and the burner units.

2202.2Joints and fittings.
Piping shall be connected with standard fittings compatible with the piping
material. Cast iron fittings shall not be used for oil piping. Unions requiring
gaskets or packings, right or left couplings, and sweat fittings employing
solder having a melting point less than 1,000°F (538°C) shall
not be used for oil piping. Threaded joints and connections shall be made tight
with a lubricant or pipe thread compound.

2202.3Flexible connectors.
Flexible metallic hoses shall be listed and labeled in accordance with UL 536
and shall be installed in accordance with their listing and labeling and the
manufacturer's installation instructions. Connectors made from combustible
materials shall not be used inside of buildings or above ground outside of
buildings.

2203.1General. Piping shall be installed in a manner to avoid placing
stresses on the piping, and to accommodate expansion and contraction of the
piping system.

2203.2Supply
piping. Supply piping used in the installation of oil burners and
appliances shall be not smaller than 3/8-inch (9 mm)
pipe or 3/8-inch (9 mm) outside diameter tubing.
Copper tubing and fittings shall be a minimum of Type L.

2203.3Fill piping. Fill piping
shall terminate outside of buildings at a point at least 2 feet (610 mm) from
any building opening at the same or lower level. Fill openings shall be
equipped with a tight metal cover.

2203.4Vent piping. Vent piping
shall be not smaller than 1¼-inch (32 mm) pipe. Vent piping shall be
laid to drain toward the tank without sags or traps in which the liquid can
collect. Vent pipes shall not be cross connected with fill pipes, lines from
burners or overflow lines from auxiliary tanks. The lower end of a vent pipe
shall enter the tank through the top and shall extend into the tank not more
than 1 inch (25 mm).

2203.5
Vent termination. Vent piping shall terminate outside of buildings at a
point not less than 2 feet (610 mm), measured vertically or horizontally, from
any building opening. Outer ends of vent piping shall terminate in a
weather-proof cap or fitting having an unobstructed area at least equal to the
cross-sectional area of the vent pipe, and shall be located sufficiently above
the ground to avoid being obstructed by snow and ice.

2203.6Cross connection of tanks.
Cross connection of two supply tanks, not exceeding 660 gallons (2498 L)
aggregate capacity, with gravity flow from one tank to another, shall be
acceptable providing that the two tanks are on the same horizontal
plane.

2203.7Corrosion
protection. Underground tanks and buried piping shall be protected by
corrosion-resistant coatings or special alloys or fiberglass-reinforced
plastic.

2204.1Pumps. Oil pumps shall be positive displacement types that
automatically shut off the oil supply when stopped. Automatic pumps shall be
listed and labeled in accordance with UL 343 and shall be installed in
accordance with their listing.

2204.2Shutoff valves. A readily
accessible manual shutoff valve shall be installed between the oil supply tank
and the burner. Where the shutoff valve is installed in the discharge line of
an oil pump, a pressure-relief valve shall be incorporated to bypass or return
surplus oil.

2204.3Maximum
pressure. Pressure at the oil supply inlet to an appliance shall be not
greater than 3 pounds per square inch (
20.7 kPa).

2204.4Relief valves. Fuel-oil
lines incorporating heaters shall be provided with relief valves that will
discharge to a return line when excess pressure
exists.